Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D338293 | Electric vacuum cleaner | Akira Kojima, Shigetaka Kimura, Hirofumi Tanaka | 1993-08-10 |
| 5216778 | Vacuum cleaner | Naruhiko Suzuki, Yoshitaro Ishii, Masao Sunagawa, Yasuyuki Hiruta | 1993-06-08 |
| 5159738 | Vacuum cleaner having silencer mechanism | Masao Sunagawa | 1992-11-03 |
| 5042844 | Hose fixture device | Akira Iida, Yoshitaro Ishii, Naruhiko Suzuki, Yasuyuki Hiruta | 1991-08-27 |
| D312901 | Electric vacuum cleaner | Tomoyuki Miyata, Kohichi Hasegawa, Masao Sunagawa, Naruhiko Suzuki | 1990-12-11 |
| 4912593 | Electrical appliance | Yasuyuki Hiruta, Yoshitaro Ishii | 1990-03-27 |
| 4809394 | Vacuum cleaner having a blower facility structure | Hisao Suka, Kazuhiro Kubota, Yoshitaro Ishii, Masao Sunagawa | 1989-03-07 |